snoopdave commented on code in PR #200:
URL: https://github.com/apache/roller/pull/200#discussion_r4177516152


##########
app/src/main/java/org/apache/roller/weblogger/ui/struts2/util/RequiresPostInterceptor.java:
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@@ -0,0 +1,70 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.  For additional information regarding
+ * copyright in this work, please see the NOTICE file in the top level
+ * directory of this distribution.
+ */
+
+package org.apache.roller.weblogger.ui.struts2.util;
+
+import static org.apache.struts2.StrutsStatics.HTTP_REQUEST;
+
+import java.lang.reflect.Method;
+import javax.servlet.http.HttpServletRequest;
+
+import com.opensymphony.xwork2.ActionInvocation;
+import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ * Refuses requests that are not POSTs to action methods marked
+ * {@link RequiresPost}. Unmarked methods are not affected.
+ */
+public class RequiresPostInterceptor extends AbstractInterceptor {
+
+    private static final long serialVersionUID = 1L;
+    private static final Log log = 
LogFactory.getLog(RequiresPostInterceptor.class);
+
+    @Override
+    public String intercept(ActionInvocation invocation) throws Exception {
+        if (requiresPost(invocation)) {
+            HttpServletRequest request = (HttpServletRequest)
+                    invocation.getInvocationContext().get(HTTP_REQUEST);
+            if (request == null || 
!"POST".equalsIgnoreCase(request.getMethod())) {
+                if (log.isDebugEnabled()) {
+                    log.debug("Refusing " + (request == null ? "unknown" : 
request.getMethod())
+                            + " request to " + 
invocation.getProxy().getActionName()
+                            + "!" + invocation.getProxy().getMethod());
+                }
+                return UIAction.DENIED;
+            }
+        }
+        return invocation.invoke();
+    }
+
+    static boolean requiresPost(ActionInvocation invocation) {
+        String methodName = invocation.getProxy().getMethod();
+        if (methodName == null) {
+            methodName = "execute";
+        }
+        try {
+            Method method = 
invocation.getAction().getClass().getMethod(methodName);

Review Comment:
   🤖Claude: fixed by having `RequiresPostInterceptor` walk the superclass chain 
(not yet pushed). It checks `getMethod(name)` on each class until a class marks 
the method with `@RequiresPost` or the chain ends. An override that does not 
repeat the annotation still requires POST. New tests use an overriding 
subclass: GET is refused, POST is accepted. `RequiresPostInterceptorTest`: 7/7 
pass on JDK 11.



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